package util;

import android.content.Context;
import android.os.Environment;
import android.util.Log;
import android.widget.Toast;
import java.io.File;
import java.io.FileOutputStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.Writer;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

import app.MyApplication;
import data.SharedPreferencesUtils;

/**
 * Created by Administrator on 2016/6/7.
 *程序崩溃时执行此方法
 */
public class CrashHandler implements Thread.UncaughtExceptionHandler{
    public static final String TAG = "CrashHandler";
    public static String mCrasHandlerPath = "/NewFi/error/information.txt";

    private Thread.UncaughtExceptionHandler mDefaultHandler; //系统默认的UncaughtException处理类
    private static CrashHandler instance;                  //CrashHandler实例
    private Context mContext;                             //程序的Context对象
    private Map<String, String> infos = new HashMap<>();//用来存储设备信息和异常信息

    /** 保证只有一个CrashHandler实例 */
    private CrashHandler() {}

    /** 获取CrashHandler实例 ,单例模式 */
    public static CrashHandler getInstance() {
        if(instance == null)
            instance = new CrashHandler();
        return instance;
    }

    /**
     * 初始化
     */
    public void init(Context context) {
        mContext = context;
        //获取系统默认的UncaughtException处理器
        mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();
        //设置该CrashHandler为程序的默认处理器
        Thread.setDefaultUncaughtExceptionHandler(this);
    }

    /**
     * 当UncaughtException发生时会转入该函数来处理
     */
    @Override
    public void uncaughtException(Thread thread, Throwable ex) {
        if (!handleException(ex) && mDefaultHandler != null) {
            //如果用户没有处理则让系统默认的异常处理器来处理
            mDefaultHandler.uncaughtException(thread, ex);
        } else {
            try {
                Thread.sleep(3000);
            } catch (InterruptedException e) {
                Log.e(TAG, "error : ", e);
            }
            //退出程序
            android.os.Process.killProcess(android.os.Process.myPid());
            System.exit(1);
        }
    }

    /**
     * 自定义错误处理,收集错误信息 发送错误报告等操作均在此完成.
     * @return true:如果处理了该异常信息;否则返回false.
     */
    private boolean handleException(Throwable ex) {
        if (ex == null) {
            return false;
        }
        //保存日志文件
        saveCatchInfo2File(ex);
        return true;

    }

    /**
     * 保存错误信息到文件中
     * @return  返回文件名称,便于将文件传送到服务器
     */
    private String saveCatchInfo2File(Throwable ex) {
        LogUtil.eE("","saveCatchInfo2File");
        StringBuffer sb = new StringBuffer();
        for (Map.Entry<String, String> entry : infos.entrySet()) {
            String key = entry.getKey();
            String value = entry.getValue();
            sb.append(key + "=" + value + "\n");
        }

        Writer writer = new StringWriter();
        PrintWriter printWriter = new PrintWriter(writer);
        ex.printStackTrace(printWriter);
        Throwable cause = ex.getCause();
        while (cause != null) {
            cause.printStackTrace(printWriter);
            cause = cause.getCause();
        }
        printWriter.close();
        String result = StringUtil.getStringUtilNew().getTimeInstance()+"---"+getInformation.getNewGetInformation(mContext).getInfoPhone()+"---"+
                        getInformation.getNewGetInformation(mContext).getInfoPhoneType()+"\n"+"...SiteAreaid..."+ MyApplication.getApp().getSiteAreaid()
                        +writer.toString();
        sb.append(result);
        try {

             if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
                File dir = new File(Environment.getExternalStorageDirectory(),mCrasHandlerPath);
                if (!dir.exists()) {
                    dir.mkdirs();
                }
                LogUtil.eE("",dir.delete()+"");
                FileOutputStream fos = new FileOutputStream(Environment.getExternalStorageDirectory()+mCrasHandlerPath);
                fos.write(sb.toString().getBytes());

                //记录了崩溃信息，一般下次联网之后的检查如果有记录就上传服务器
                SharedPreferencesUtils.setParam(mContext,HomeUtil.mCrashError,mCrasHandlerPath);
                fos.close();
            }
            return mCrasHandlerPath;
        } catch (Exception e) {
            Log.e(TAG, "an error occured while writing file...", e);
        }
        return null;
    }

}
